Prosthetic valve



FIG. 1 is a perspective view of a prosthetic valve;

FIG. 2 is a top plan view thereof;

FIG. 3 is an elevational view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a cross-sectional view thereof taken along lines 5—5 of FIG. 2. 

The ornamental design for a prosthetic valve, as shown and described. 